DBG4
#define DBG4 (void) printf
#define DBG4(a, b, c, d)
#define DBG4 printf
#define DBG4(a, b, c, d)
#define DBG4(_type, _fmt, _a1, _a2, _a3, _a4) \
#define DBG4(_type, _fmt, _a1, _a2, _a3, _a4)
#define DBG4(_type, _fmt, _a1, _a2, _a3, _a4)
#define DBG4(_type, _fmt, _a1, _a2, _a3, _a4) \
#define DBG4(flag, psp, fmt, a1, a2, a3, a4) \
#define DBG4(flag, psp, fmt, a1, a2, a3, a4)
#define DBG4(flag, psp, fmt, a1, a2, a3, a4) \
#define DBG4(flag, psp, fmt, a1, a2, a3, a4)
#define DBG4 n2rng_dprintf
#define DBG4(vca, lvl, fmt, arg1, arg2, arg3, arg4)